apoc.coll.duplicates

Details
Syntax	`apoc.coll.duplicates(coll)`
Description	Returns a `LIST<ANY>` of duplicate items in the collection.
Arguments	Name	Type	Description
	`coll`	`LIST<ANY>`	The list to collect duplicate values from.
Returns	`LIST<ANY>`

Usage examples

The following returns a list of duplicates in a list:

RETURN apoc.coll.duplicates([1,3,5,7,9,9]) AS output;

Results
Output
[9]